NUAGE DE GIVRE PROJECT
BlobTracker: movement detection with interactivity for a public space
Travobject was commissioned by NOVA-LUX for the creation of a movement detection system based on image acquisition from HD cameras adapted to night vision: Blobtracker. The project Nuage-de-Givre was sponsored by the Quartier des Spectacles de Montreal consortium. The Nuage de Givre is an urban and interactive multi-media installation set for the festival of light of Montreal from December 15th until the first week of February 2012.
The experience provided by Nuage-de-Givre relies on specific illuminations and projection techniques recreating an illusion akin to northen lights (aurora borealis). Blobtracker literally detects movement and follows people as they move underneath a canopy of suspended ice packs where the Blobtracker system projects a white illumination overhead giving the illusion of tracking their movements.
Blobtrackers features (as of January 2012)
- Windows (7) based application;
- Adaptable to resolution, frame rate and various acquisition system (IP, Composite, HDMI, DirectShow);
- Leverages Intel based OpenCV image processing library and CUDA support;
- Built-in image plane correction such as crop and warping controls for angle corrections;
- Sensitivity and color detection control;
- Multiple movement detection algorithms;
- Multipleinstances of Blobtracker can run per PC;
- All trackers to converge to a single large image for projection;
- Large number of moving objects tracked simultaneously;
- Efficient CPU usage proportional to image size and image resolution to be processed.
This figure : Blobtracker basic setup recognition of an illuminated shape (left) against the background and isolation by Blobtracker of the detected shape (right).
Typical and potential application
- Responsive and immersive digital signage
- Large display information based on activities in public venue
- Sport team real-time tracking to display application
- Facial detection
- Corporate and Museum interactive exhibit or kiosk interactivity projects
Some other links about this unique project that used Blobtracker: